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Manila clam

Quality mark Cultivation
/Keurmerk Wild
Green
Second choice
Avoid
Bycatch
Informatie over vissoort
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General

Shellfish

Shellfish is a culinary term that is often used for several species of molluscs, gastropods, bivalves and arthropods. Some examples are the St. James shell, mussels, razor clams, oysters, cockles and whelks. Most shellfish live partly or fully buried into the seabed, mostly in sandy or gravelly bottoms. They feed by filtering nutrients out of the water. Seed and eggs are released into the water and fertilized externally. Most shellfish are hermaphroditic, they can be both male and female. There are many different shellfish species in the North Sea that are very much suitable for consumption. Fishing methods on shellfish include hand-picking, dredging or mechanic dredges (suckers).

 

Manila clam

The Manilla clam, also known as the Japanese littleneck clam, likes to burrow itself into sandy and muddy substrates. They can mostly be found at depths of 10 centimetres. This species is native to Asia but has been introduced all over the world, including the Netherlands. The Manilla clam can reach lengths of up to 7.5 centimetres.

 

Manila clam

Ruditapes philippinarum
Origin

Europe, inland waters

Farming- / Catch method

Handdredge

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Fish stocks and fishing pressure
Ecosystem effects
Fishery management
Final assessment
Explanation assessment

The introduced Manila Clam is collected in France with hand dredges on intertidal parts of the sandy coasts. The fishery with hand dredges is selective and causes little damage to the ecosystem. The management of this fishery is reasonably well arranged.

 

Manila clam

Ruditapes philippinarum
Origin

Pacific Ocean, north-east and north-west (FAO 61|67)

Farming- / Catch method

Dredges

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Fish stocks and fishing pressure
Ecosystem effects
Fishery management
Final assessment
Explanation assessment

There are no reliable stock assessments for manila clams in this area. The species is currently being overfishedOverfished:
A stock is overfished when the stock size has decreased so far that it can no longer produce a maximum sustainable yield. The size of the fish populations is insufficient to reproduce in the long term. 
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Although there is a lack of information, harvesting bivalves has a large impact on the ecosystem. Using dredgesBoat dredges:
A fishing method used for collecting shellfish and crustaceans from the bottom. The ship drags a steel frame with a net over the bottom, in which shellfish and crustaceans are caught. Large ships can drag multiple dredges simultaneously, on each side of the ship.  
further increases this impact by disturbing the seabed. The amount of discardsDiscards:
Unwanted by-catch, which is thrown back because there is no quota, the market price is too low, or the fish is below the legal minimum landing size. Discards can be alive or dead.
is expected to be high. It is unknown which species are caught as bycatchBycatch:
Species caught next to species targeted for fishery. By-catches can consist of non-commercial species and species that are too small, and can be kept (this part is sometimes called by-product) or thrown back into the sea (discards). 
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An overal managementManagement plan:
A management plan describes the management measures (such as catch limits) and their evaluation for one or more fisheries.
plan is in place, but implementation is lacking.

 

ASC label

Fish with the ASC label is farmed in a sustainable manner.

MSC label

Fish with the MSC label is caught sustainably.

Good fish

This fish is not being overfished or is being responsibly farmed, with minimal impact on the environment.

Second choice

This fish is a second choice. There are still some improvements to be made in this fishery or fish farm.

Avoid

Do not buy this fish. It's being overfished or the way it's farmed or caught has a negative impact on the environment.

By-catch

This fish is unwillingly caught while fishing for a different species. They are underused and should be eaten more.

GlobalG.A.P.

GlobalG.A.P. certified farms are doing a step in the right direction in terms of sustainability. A few species with this label are getting a better score on the VISwijzer.

Organic

Organic standards are the strictest when it comes to fish feed. They also require certain measures for animal well-being.

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